Flow field analysis and structure optimization of fan suck-in bio-light control lamp

In order to solve the problem that the fan suck-in bio-light control lamp can not inhale pests at the entrance, the fluid dynamics simulation of the internal flow field of the existing fan suck-in bio-light control lamp was carried out by using Fluent software to study the changes of the internal flow field of the fan suck-in bio-light control lamp under different air inlet angles and fan speeds, the three-dimensional model of the fan suck-in bio-light control lamp was established through Solidworks, and the model was meshed in the Workbench. The simulation analysis of the flow field pressure, trace, velocity and eddy viscosity inside the fan suck-in bio-light control lamp showed that there were vortices on both sides of the fan of this fan suck-in bio-light control lamp device, which caused pests to be rolled to the outside of the fan suck-in bio-light control lamp by the air flow, which was the reason for the low efficiency of the fan suck-in bio-light control lamp in absorbing pests. By changing the angle of the air inlet of the control lamp, the trace of pests entering the insect collecting bottle could be obtained, it could be shown that under the working condition of 1 800 r/min fan, the pressure of insects being sucked into the insect collecting bottle was 8.25 kN/m~2, and the speed of insects being sucked into the insect collecting bottle was 3.6 m/s, when the air inlet was 60°, the trace of pests of the fan suck-in bio-light control lamp was the most stable, there was no vortex inside the insect collecting bottle, and the pressure inside the insect collecting bottle was all negative, so as to achieve the optimization goal, which can improve the inhalation effect of the control lamp on pests.